Rotonde de Cartier Mysterious Double Tourbillon, calibre 9454 MC

This is one of two “mystery” watches unveiled by Cartier this week in Geneva — the Rotonde de Cartier Mysterious Double Tourbillon. As the name implies, it is a double tourbillon, with two axes of rotation. The first tourbillon rotates at a rate of one revolution per minute. The tourbillon carriage (crafted of titanium) has no visible connection to the rest of the movement – hence “mysterieuse”. As with other watches of a similar nature, the tourbillon is mounted on a sapphire disc which itself makes one revolution every five minutes. Thus the the tourbillon rotates once a minute while simultaneously travelling around the dial once every five minutes. Impressive. Great High-res pics and more info, below.

The second is the Rotonde de Cartier Mysterious Double Tourbillon with Geneva Seal.As the name implies, it is a double tourbillon, with two axes of rotation. The first is the one revolution per minute of the tourbillon carriage